right it is all the same and is as explained, the only difference with most
crushed coral is grain size, which can be a particle trap and offers low
amounts of surface area for denitrification. The ooltic is rounded and in
sugar sized will offer more surface area and is not as rough on the
critters. If I am correct on this one calcite is the next step after
aragonite and is not dissolveable(if thats a word) like the aragonite.
----- Original Message -----
From: "DBW" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, January 28, 2001 4:44 PM
Subject: Re: Problems with diatomes
>
> >
> > Fredrik,
> >
> >>
> >> I know that most of you would recommend aragonite and/or oolithic sand
and
> >> probably build a bed several inches
> >> deep, the problem is that the only thing I can get here is coral sand.
> >
> >
> > Coral sand = aragonite = oolitic sand
> >
> > It is all the same stuff. They just give different names to it, part of
the
> > marketing strategy. All you need to look for is a finer grade of sand.
> >
> > All aragonite means is the crystalline structure of the calcium
carbonate.
> > Aragonite is the one laid down by living things, the other important one
is
> > calcite. Oolitic means rounded, so the sand grains are simply nice and
> > round. They are just using fancy words to make you buy their product,
that
> > is all.
> >
>
> Catch ya,
>
> DBW | The Caretaker, OZ REEF Marine Park
> Melbourne | http://ozreef.org/
> Australia | [EMAIL PROTECTED]
> --------------------------------------------------------------------------
> According to my calculations, the problem doesn't exist
> ________________________________________
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